Minimum Egress Window Size Alberta

Or 543 sq inches and no dimension less than 380 mm 15 in see drawings below for further clarification.

Minimum egress window size alberta.

Maximum 44 inches to window sill measured from finished floor. Minimum 24 inches of net clear height opening. Minimum 20 inches of net clear width opening. The opening area differs from a casement window to a slider window.

The egress window must have a glass area of not less than 8 of the total floor area of room s for which it is servicing to allow the minimum amount of sufficient natural light. What is needed to convert standard windows. 35 m2 in the area at a minimum. The requirements however are less about the style of window and more about the size and location.

The minimum window area must be achieved without having to remove window sashes or hardware. To ensure the unobstructed opening meets these criteria you should measure between the sashes jambs sills and opening mechanisms. The minimum egress window opening is 20 wide. The minimum opening area of the egress window is 5 7 square feet.

Unobstructed opening of not less than 0 35 m2 3 77 sq ft in area with no dimension less than 380 mm 15 inches this window should maintain the required opening during an emergency without the need for additional support. In addition the egress window requirements for basements specifies that they be at least 36 inches in height and width with a fully functioning opening. Window egress into window well if a window opens into a window well a clearance of at least 760 mm 30 between the window and the wall of the window well is required. An awning style window may pose a challenge in maintaining this clearance and it could interfere with the occupant s ability to exit through the window well.

See appendix a building inspection services. Window wells serving an egress window shall not be less than 9 square feet in area with a horizontal length width of no less than 36 inches. The most popular window styles for egress windows are casement and sliding windows. This window must provide an unobstructed opening with a minimum area of 0 35 m.

Windows referred to above shall provide unobstructed openings with areas not less than 0 35 m2 3 8ft2 with no dimension less than 380 mm 15 in. Although the minimum opening dimensions required for height and width are 380 mm a window opening that is 380 mm by 380 mm would not comply with the minimum area requirements. Let s have a look at the alberta building code abc 2014 criteria that all egress windows must satisfy. The nbcc details specific size requirements as.

In other words big and easy enough to exit a room through. It must be at least 5 7 square feet that is at least 20 inches wide by 24 inches high with an opening no higher than 44 inches from the floor.